diff --git a/src/css/popup.css b/src/css/popup.css
index 5623009a9..9846b9785 100644
--- a/src/css/popup.css
+++ b/src/css/popup.css
@@ -95,7 +95,7 @@ body[dir="rtl"] #panes > div {
     direction: rtl;
     }
 #panes > div:nth-of-type(2) {
-    font-family: Noto Sans;
+    font-family: "Noto Sans", sans-serif;
     overflow-y: auto;
     overflow-x: hidden;
     width: 24em;
@@ -349,7 +349,7 @@ body[dir="rtl"] #tooltip {
     }
 #firewallContainer > div > span[data-acount]:before,
 #firewallContainer > div > span[data-bcount]:after {
-    font-family: "Noto Mono",monospace;
+    font-family: "Noto Mono", monospace;
     position: absolute;
     top: 50%;
     transform: translate(0, -50%);